Just a hunch...
The cat was making a big racket, and a neighbor took matters into their own hands.
Like I said, just a hunch.
Their hands? I was hoping they used a scalpel and some anesthetic. ;-)
So the cat manufactured sporting goods. Why should that bother the neighbor? That's no reason to rip the poor cat's nuts off!
Ref post #4.
I have not doubt that was the reason.